> My unit is more than 10 years old and I need to replace the evaporator drip
> pan since it's rusted and there are a lot of holes. Where can I find a
> supplier or sheet metal fabricator who sell/makes drip pan? I live here in
> Southern CA.
Its best to replace the entire evaporator. Repairing the leaks is not feasible (you would have to pump down all the refrigerant, cut the line sets, open the ducting and redo all of this to put it back together including evacuating the line sets.) even if you could find someone to fix the leaks the cost would not be worth it in the long run.